#include <iostream>
#include <vector>
#include <string>


int main()
{
    std::vector<std::string> text(10, "char ");
    
    for(auto it = text.begin(); it != text.end() && !it->empty(); ++it)
    {
        for(auto &c : *it)
        {
            c = toupper(c);
        }
        std::cout << *it << std::endl;
    }
    return 0;
}